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Free Calculators

| Acceleration Equivalents | cm-inch-feet converter | Distance, Speed, Time Calculators | Energy To Work Equivalents | Horsepower Calculator | Lambda Calculator | Length Converter | Mathematical Calculator | Miles Per Gallon Calculator | Miles per Gallon for Liter purchases | Power Equivalents | Pressure Equivalents | Temperature Converter | Velocity Equivalents |

Here are some simple free calculators that might help make your life a little easier! Enjoy!  They run on javascript which the majority of computers can read. If this page is full of confusing code, then you don't have javascript - sorry. These calculators are reprinted with permission from the companies listed below the calculator.

Acceleration Equivalents

First, type the number you wish converted here:
Then, click radio buttons for desired conversion:
From: cm/sec/sec
 m/sec/sec
 m/hr/sec
 km/hr/sec
 ft/hr/sec
 ft/sec/sec
 ft/min/min
 mi/hr/sec
 knots/sec
To: cm/sec/sec
 m/sec/sec
 m/hr/sec
 km/hr/sec
 ft/hr/sec
 ft/sec/sec
 ft/min/min
 mi/hr/sec
 knots/sec

Free JavaScripts provided
by The JavaScript Source

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cm-inch-feet converter

Take the headache out of figuring out how many inches 176 cm is, or feet 30 inches is, with this extremely handy conversion script.

cm
feet
inch

Note: 1 Inch = 2.54 cm, 1 Feet = 30.48 cm, 1 Feet = 12 Inch
This free script provided by
JavaScript Kit
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Distance, Speed, Time Calculators

Time from Distance and Speed

Enter distance value and unit:
Enter speed value and units:
Time is: Hours Minutes Seconds

Distance from Speed and Time

Enter speed value and units:
Enter time: Hours Minutes Seconds
Distance is (select unit before calculating):

Speed from Distance and Time

Enter distance value and unit:
Enter time: Hours Minutes Seconds
Speed is (select units before calculating):

Free JavaScripts provided
by The JavaScript Source

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Energy To Work Equivalents

First, type the number you wish converted here:
Then, click radio buttons for desired conversion:
Fm: Joules
 Kg-meters
 Ft-lbs
 Kw-hrs
 Metric Hp-hrs
 US Hp-hrs
 Liter-atm
 K-cal
 Btu
To: Joules
 Kg-meters
 Ft-lbs
 Kw-hrs
 Metric Hp-hrs
 US Hp-hrs
 Liter-atm
 K-cal
 Btu

Free JavaScripts provided
by The JavaScript Source

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Horsepower Calculator

Car Model :
Vehicle Weight With Driver : (in Pounds)
Quarter Mile time : (in seconds)
Results will display in a pop-up box in the top left corner of your screen - it takes a minute and will turn everything blank while it is working - don't worry - everything comes back!


Free JavaScripts provided
by The JavaScript Source

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Lambda Calculator

Enter your exhaust gas values below & click the "Calculate Lambda" button
% of O2 PPM of HC
% of CO2 PPM of NOx*
% of CO *Calculation is more accurate with NOx but works without NOx if only 4 gas readings are available.
Results:

Lambda
Air / Fuel Ratio
A purple bar will appear on the colored line below to show your results as long as the results are in the 1.02 to 0.800 range.

 

Lambda too rich 0.98 and below - Oxidation less effective (CO too high)
< 0.98 Oxidation (cleaning up CO + HC) Less efficient
0.990 to 0.980 is within an acceptable range of 0.98 to 1.02
= 1.0 perfect for emission and CAT operation (1.005 to 0.995 good for CAT operation)
1.010 to 1.020 is within an acceptable range of 0.98 to 1.02
Lambda too lean 1.02 and above - reduction less effective (Nox high from CAT)
> 1.02 Reduction (cleaning up NOx) Less efficient

 

 

 

 

This calculator is for USA calculation only and it assumes the following:

  1. The exhaust system is free of air leaks.
  2. The air injection system has been disabled.
The Lambda calculation was originally developed by Dr. Johannes Brettschneider in 1979 to calculate the balance of oxygen to fuel. This version was developed for Smogsite.com by TGB Computing (a computing and publishing company in San Franciso, CA) - many thanks to them for their long hours of hard work on this! The bar graph was developed by Gerd Tentler at xenaworld.de - thanks for a great job!

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Length Converter

1 select a length unit from the "From" dropdown list and one from the "To" dropdown list.
2 Enter a numeric value, and click "To" button.

From To
centimeters = 1 centimeters
Enter
1
This free script provided by
JavaScript Kit


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Mathematical Calculator

http://jdstiles.com/java/calcscripts.html

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Miles Per Gallon Calculator

Miles Driven: mi. ~ Mi. per Gal.
Gallons of Gas: gal $ per month
Cost per Gallon: $ $ per year
Miles per Day:    
Free JavaScripts provided
by The JavaScript Source
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Miles per Gallon for Liter purchases

Do you think of fuel consumption in miles per gallon, but have to buy your fuel in liters? This script will figure your miles per gallon for you. Enter miles traveled and liters used and the conversion is done for you. (Imperial gallons are used, not US gallons.) Works in IE only.

Enter Mileage and Fuel used since last fill-up:

Distance covered: miles
Litres of fuel used: litres

Consumption: Miles per Gallon
Litres per 100km

The gallons are Imperial Gallons - not U.S.
(1 Imp Gal = 1.201 US Gal = 4.546 litres)

Free JavaScripts provided
by The JavaScript Source

 

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Power Equivalents

Type the number you wish converted here:
Then click radio buttons for desired conversion:
From: Hp
 Metric hp
 Kw
 Poncelets
 Kg-m/sec
 Ft-lb/sec
 Kcal/sec
 Btu/sec
To: Hp
 Metric Hp
 Kw
 Poncelets
 Kg-m/sec
 Ft-lb/sec
 Kcal/sec
 Btu/sec

Free JavaScripts provided
by The JavaScript Source

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Pressure Equivalents

First, type the number you wish converted here:
Then, click radio buttons for desired conversion:
Fm: megadynes/
sq cm
 kg/
sq cm
 lb/
sq in
 atmos-
pheres
 Hg*
Meters
 Hg*
Inches
 H2O*
Meters
 H20*
Inches
 H20*
Feet
To: megadynes/
sq cm
 kg/
sq cm
 lb/
sq in
 atmos-
pheres
 Hg*
Meters
 Hg*
Inches
 H2O*
Meters
 H2O*
Inches
 H20*
Feet


*Standard columns of Mercury at 0o C, g = 980.665 cm/sec/sec
Standard columns of Water at 60o F, g = 32.1756 ft/sec/sec

Free JavaScripts provided
by The JavaScript Source
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Temperature Converter

Fahrenheit: Celsius:   Kelvin:  

For this script and more, Visit http://javascriptkit.com

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Velocity Equivalents

First, type the number you wish converted here:
Then, click radio buttons for desired conversion:
Fm: cm/sec
 m/sec
 m/min
 km/hr
 ft/sec
 ft/min
 mi/hr
 Knots
To: cm/sec
 m/sec
 m/min
 km/hr
 ft/sec
 ft/min
 mi/hr
 Knots

Free JavaScripts provided
by The JavaScript Source

 

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